tā / zǒng shì / wài wù / yú / yī xiē / wú guān jǐn yào / de / xiǎo shì / dān wù / le / zhèng shì

他总是外骛于一些无关紧要的小事，耽误了正事。

He is always distracted by trivial matters that are not his business, delaying his real work.